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Title: On the response of a two-level system to two-photon inputs
Authors: Dong, ZY
Zhang, GF 
Amini, NH
Issue Date: 2019
Source: SIAM journal on control and optimization, 2019, v. 57, no. 5, p. 3445-3470
Abstract: The purpose of this paper is to study the interaction between a two-level system (qubit) and two continuous-mode photons. Two scenarios are investigated: Case 1, how a two-level system changes the pulse shapes of two input photons propagating in a single input channel; and Case 2, how a two-level system responds to two counterpropagating photons, one in each input channel. The steady-state output field states for both cases are derived analytically in both the time and frequency domains. Numerical simulations demonstrate rich and interesting two-photon scattering phenomena induced by a two-level system.
Keywords: Quantum control
Two-level system
Input-output formalism
Publisher: Society for Industrial and Applied Mathematics
Journal: SIAM journal on control and optimization 
ISSN: 0363-0129
EISSN: 1095-7138
DOI: 10.1137/18M1210770
Rights: © 2019 Society for Industrial and Applied Mathematics
Posted with permission of the publisher.
The following publication Dong, Z. Y., Zhang, G. F., & Amini, N. H. (2019). On the Response of a Two-Level System to Two-Photon Inputs. SIAM Journal on Control and Optimization, 57(5), 3445-3470 is available at
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